Inmate behind prison contraband video quizzed by police

NSW police have interviewed a former inmate who uploaded a video of himself wielding a knife in a Sydney prison and boasting about a stash of drugs.

The former Bandido bikie, Mark Walton, who's since been released from the Parklea Correctional Centre, has told News Corp Austalia the video was intended to alert the public to the dangers of life behind bars.

"Jail messes people up," he said.

"I never used to touch drugs until jail, when I went in I got on this and I got on that. I couldn't escape it."

Mr Walton was quizzed at Batemans Bay Police Station on the state's south coast today but released without charge.

He allegedly shot the video while in custody in mid-2016 using a mobile phone and uploaded it to YouTube last month.

Being in possession of a phone in jail carries a maximum penalty of two years in prison and a $5500 fine.